Frittelli, J. (2018). Positive Train Control (PTC): Overview and policy issues ([Library of Congress public edition].). Congressional Research Service.
Chicago Style (17th ed.) CitationFrittelli, John. Positive Train Control (PTC): Overview and Policy Issues. [Library of Congress public edition]. [Washington, D.C.]: Congressional Research Service, 2018.
MLA (9th ed.) CitationFrittelli, John. Positive Train Control (PTC): Overview and Policy Issues. [Library of Congress public edition]. Congressional Research Service, 2018.
Warning: These citations may not always be 100% accurate.